Wannasu A, Sribunrueang P, Kraibut A. The Development of a Thai Language Learning Activity Package on Words and Their Functions Based on the Four Iddhipāda Principles for Mathayom Suksa 3 Students at Photak Phitthayakhom School, Nong Khai Province. JBER [internet]. 2026 Jun. 29 [cited 2026 Sep. 21];12(S1):196-205. available from: https://so06.tci-thaijo.org/index.php/jber/article/view/297622